<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box {
            width: 0px;
            height: 0px;
            border-top: 50px solid transparent;
            border-bottom: 50px solid transparent;
            border-left: 50px solid pink;
            border-radius: 100px;
            transition: all .2s linear;
            margin: 200px auto;
        }
        
        .box:hover {
            z-index: 2;
            /* -webkit-box-shadow: 0 15px 30px rgba(0, 0, 0, .1); */
            box-shadow: 0 15px 30px rgba(0, 0, 0, .1);
            /* -webkit-transform: translate3d(0, -2px, 0); */
            transform: translate3d(0, -2px, 0);
        }
        
        .box2 {
            width: 20px;
            height: 20px;
            background: linear-gradient(45deg, transparent 50%, #61c4cf 0%);
            background-size: 16px 16px;
            border-top-right-radius: 3px;
        }
    </style>
</head>

<body>
    <div class="box"></div>
    <div class="box2"></div>
</body>

</html>